کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
63255 47677 2006 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A novel titanosilicate with MWW structure: Highly effective liquid-phase ammoximation of cyclohexanone
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
A novel titanosilicate with MWW structure: Highly effective liquid-phase ammoximation of cyclohexanone
چکیده انگلیسی

The liquid-phase ammoximation of cyclohexanone with ammonia and hydrogen peroxide was conducted over Ti-MWW. Ti-MWW is capable of giving both cyclohexanone conversion and oxime selectivity >99% under optimum reaction conditions. It is a highly active, selective, and reusable catalyst for the synthesis of cyclohexanone oxime in the presence of water. In comparison to other titanosilicates, Ti-MWW shows much higher catalytic activity, even superior to that of TS-1. The catalytic performance of Ti-MWW depends greatly on the operating conditions of the reaction, especially the method of adding substrates. The reason why the method of adding substrates plays such an important role in the ammoximation of ketones or aldehydes over Ti-MWW was investigated after a detailed evaluation of the reaction mechanism.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Catalysis - Volume 237, Issue 2, 25 January 2006, Pages 359–367
نویسندگان
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